With the abduction of Walt fresh on their minds and their raft destroyed, Michael, Sawyer and Jin fight for their lives and discover a new predator, that of a large shark, in the roiling, open ocean. More of Michael's background story reveals his desperation and obsession for his son's safety in 1997 New York when his former flame, Susan, sued him for sole guardianship of baby Walt. Meanwhile on land, in a re-telling of the previous episode this time from Locke's point of view, he must descend into the hatch when Kate goes missing inside where they both end up as captives of the mysterious Desmond.
—Anonymous